While researching Vitamin C supplements, I noticed dozens of people outraged about various companies slipping in "synthetic vitamin c" (ascorbic acid). From what I can tell this aversion might have started from a westonaprice.org article that states:
A new study adds weight to the argument that synthetic vitamin C (ascorbic acid) may not be such a good idea. An earlier study indicates that synthetic vitamin C may contribute to the formation of genotoxins that can lead to cancer (Science 2001 Jun 15;292(5524:2083-6), and other research results, presented to the American Heart Association but never published found that those taking 500 mg vitamin C per day had a greater tendency to thickening of the arteries (Los Angeles Times, March 3, 2000).
I assume the study they are referring to is Vitamin C-Induced Decomposition of Lipid Hydroperoxides to Endogenous Genotoxins, which unfortunately isn't open-access. Does this study actually claim that exclusively "synthetic vitamin c" has this negative potential? Have there been any subsequent studies that support the claim?